Yarn winding apparatus



March 10, 1953 A. w. KEIGHT YARN WINDING APPARATUS 2 SHEETSSHEET l FiledMarch 4, 1950 INVENTOR. ALBERT w. KElGHT ATTORNEYS.

March 10, 1953 w. KEIGHT} YARN WINDING APPARATUS Filed March 4, 1950 2SHEETS-SHEET 2 T s n T N N E R w 0 mW m mu BY LB AM u; H

Patented Mar. 10, 1953 UNITED STATES PATENT OFFICE YARN -WIND1NGAPPARATUS Albert w. Keight, (lumberlanl Md assignorto GelaneseCorporation. of America, New York, N. Y., a corporation of DelawareApplication March 4, 1950, Serial No. 147,720 a clai s. (01. 242-18)This invention relates to yarn winding ap-,- paratus and relates moreparticularly to yarn winding apparatus for applying a transfer tail oftwisted yarn to a yarn package.

Yarn packages are frequently produced by means of winding apparatuswherein the yarn is drawn from a supply package such as a bobbin, has atwist imparted thereto, and is taken up in the form of a package, suchas a cheese, which may be provided with a transfer tail. Both the supplypackage and the take-up package may be rotated during the windingoperation, the amount of twist introduced into the yarn depending uponthe relative speed of said packages.

To begin the winding of a take-up package, it.

has hitherto been the practice to stop the rotation of both the supplypackage and the mandrel carrying the take-up package, draw the yarn fromthe supply package and loop it around a support carried by the mandreland start the rotation of the supply package and the mandrelsubstantially simultaneously. The first portion of the yarn that istaken up may be employed to form a transfer tail, following which thewinding of the yarn package is carriedout.

Heretofore, the end of yarn drawn from the supply package and loopedaround. the support at the start of the winding operation and whichformed the transfer tail has had no twist imparted thereto. Althoughnormally this end of yarn is quite short-its presence in the package isobjectionable owing to the fact that it differs both in appearance anddyeing properties from the remainder of the yarn. As a result, when thisend of yarn is woven, knitted or otherwise converted into a fabric itwill show up as a fabric defect. 1'

It is an important object of this invention to provide a yarn windingapparatus which will be free from the foregoing and other disadvantagesof the apparatus previously employed for this purpose. a

A further object of this invention is to provide ayarn winding apparatuswhichwill produce a yarn package having a uniform twist in the-ends ofthe yarn as well as in the yarn forming the body of the package.

Another object of this invention is to provide a yarn winding apparatuswhich will produce a yarn package having a transfer tail of twisted yamOther objects of this invention, together with certain details ofconstruction andcombinations of-parts, will be apparent from thefollowing detailed description and claims. Y i

. In accordance with my invention, I equip the mandrel of a windingmachine with suitable means rotatable with the mandrel for taking up theyarn prior to the winding thereof on the yarn package. Preferably, thismeans for taking up the yarn comprises a plurality of pins fixed to saidmandrel 'at a point spaced from the yarn package. At the commencement ofthe operation of winding yarn in the form of a package, a length ofyarnis drawn from the supply package and looped about the pins. Themandrel and yarn supply package are then caused to rotate,

the yarn being wound on the pins until the yarn being wound is havingapplied thereto a predetermined amount of twist. The yarn is then guidedonto one end of the package and held at that point for a predeterminednumber of turns to be wound thereon whereby a transfer tail is formed,after which the yarn is guided onto the main body of the yarn package.

In orderto guide the yarn onto the pins and onto the yarn package, thewinding apparatus is provided with yarn guide means adapted to guide theyarn onto the pins and to be moved relative to the mandrel to guide theyarn from the pins to the desired positions on the yarn package to formfirst the transfer tail and then the yarn package itself.

A preferred embodiment of the present invention is shown in theaccompanying drawings wh ein i Fig, 1 is a perspective view of the yarnwinding apparatus with certain parts omitted in the interest of clarity,

2 is a top elevational view of a portion of the yarn winding apparatus,and

3 is a front elevational view of the portion of the yarn windingapparatus shown in Fig. 2.

Referring now to the drawings, the reference numeral designates a bobbinmounted on a spindle IZthat is rotated by any suitable means equippedwith a clutch and/or brake (not shown) in a manner well-known in theart. Yarn I3 is drawn upwardly from the bobbin H, passed throughpigtails l4 and. I5, across a bar Hi and is directed by,.a reciprocatingguide l1 onto a yarn package, such as a cheese, indicated generally byreference numeral I8. The cheese 18 includes a tubular support I 9 thatis provided .adjacent one end'thereof with a groove 2!, and

carries a yarn winding 22 thereon.

A mandrel 23 engages the interior of the tubular support l9 and ismounted for free rotation on a bracket 24 that pivots about a rod 25. Atits free: end, the mandrel 2311s provided with a the cork roll 21 drivesthe cheese [8 at-a constantperipheral speed thereby to draw the yarn I3from the bobbin II. By regulating the rota tional speed at which thebobbin H is with respect to the speed at which the yarn f3 is drawn fromthe bobbin H any desired-degree of twist may be imparted uniformly tothe yarn l3.

Positioned adjacent the cork roll 21 is agear reducer, indicatedgen'era'lly by reference'numeral 3i, which is driven from one of theshafts 28 through gears 32 and 33. The output of the gear reducer 31drives a cam 34, which, on rotation, cause the reciprocation of a rod 35slid ably mounted in bearing blocks 315 and 31" and urged into contactwith the cam 34 by means of a compression spring 38- positioned betweenthe bearing block 31' and a collar '39 'fa'stened to said rod. Securedto the undersurtace-ofthe rod 35- is a rack segment 41 which engages apinion "i2 fastened to a shaft 43 journalled in l a U-shaped bracket Nshown in Fig. 2 At its free end, the shaft 63 carries a finger 45 positi'cned adjacent the pins 26 andthe end of the tubular support l-9.-

As the rod is recipro cated by the rotation of the cam 31, the finger fas will be partially rotated. in counter-clockwise 1 direction past thepins 26 and past the: addict. the tubular support 1-9 and then in. aciockwm direction back to its original position.

To begin the winding of a cheese it, an empty tubular support 19 ispositionedon the mandrel 23 and a yarn is is drawn from the bobbin tthrough the pigtails I! and f5 and the end of the yarn it manuallylooped arcund the pins 2%. The bobbin II is started and substantiallysimultaneously the bracket '24 is'lowered so iasto bring the tubularsupport 19 into contact with the surface of the rotating cor k roll 21'.yarn i3 is then dropped over the finger Iii-which guides the yarn l3onto the'pi-ns 26 to form a winding After all the untw ist'ed yarn hasbeen wound onto the pins 26, the rotationofthe cam 35 causes acounterclockwise rotation of the finger is so as to guide theyarnontothe end of the tubular support 1'9 and place a transfer tail 4?of twisted yarn into the groove 21 The further counterclockwise rotaticnoff the finger 5'5 permits the yarn 13 to slip oi? said finger and bepicked up by the reciprocating guide li. B'y proper design of thesurface-1o: the cam 34, it is possible to insure that bill the untwistedyarn l3 will be wound on the pins 26 and that the proper number of turnsbe placed in the transfer tail 41. When the yarn winding 22 iscompleted, the bobbin 1! is stopped and simultarne'ou'slythe bracket israised to move the cheese 18 away from contact with the cork .r'ol-l2-1. The completed cheese i8 is then removed from the rnand-rel- 23,"the yarn on the pins 26 being discarded;

It is to be understood that the foregoing detailed description is merelygiven by 'way' oi illustration and. that'- many. variations? may be The.a

made therein without departing from the spirit of my invention.

Having described my invention, what I desire to secure by Letters Patentis:

l. The combination with a yarn winding apparatus wherein yarn is wound,by means including a reciprocating yarn guide, into package farm on asupport mounted; on a rotatable mandr'el, of a second yarn guide forguiding the yarn relative to said support and said mandrel, and meansoperatively connected to said yarn winding apparatus for moving saidsecond yarn guide so as to cause the yarn to be led to predeterminedpositions-,said means :or moving said second yarn guide including ashaft for supporting the latter, apinion fixed to said shaft and.a-reciprocatingrack for moving said pinion and said. shaft.

'2'. The combination with a yarn winding apparatus wherein yarn'iswound, by means ineluding a reciprocating. yarn guide, into package formon a support'm'ounted on a rotatable mandrel; of. means on the: mandrelfor receiving the yarn at the beginning of the winding operation, a:second yarn guide for guiding the yarns to said; yarn receiving means;and means-operatively connectedto said yarn: winding. apparatusformoving said second yam. guide soas to cause the yarnto be: led tosaidsupport and to .said reciprocating guide ait'er'a predetermined'num-' ber of yarn windings have been placed on said yarn. receivingmeans: on said mandrel, said means: for moving said second. yarn. guide.including. a shaft for supporting the latter, a pini'onlfixed. to said;shaft andra reciprocating rack for moving. said pinion :and said. shaft.

3'.Thecombination with a yarn winding apparatus whereinyarn. is wound,by means including a reciprocating yarn guide, into package form on. asupport mounted on. a. rotatable mandreL. of pins fixed. to the end ofthe mandrel: for receiving the yarn at the beginning of the Winding'op'erationIa second yarn guide for guiding the yarn. onto said". pins,vand means operatively connected to said yarn winding apparatus formoving sai'd second.yarnguide so as to cause the yarn .to be:led'to-said support and to said re:- ciprocating guide after apredetermined number of yarn windings'have been placed-onx'said pins,said means for moving said-second yarn guide including a shaft for;supporting the latter, a pinion to. said: shaftand a reciprocating rackfor moving said pinion and said shaft.

I 4;.- The combination with a yarn winding appara-tug wherein yarniswound, by means inci-uding. a reciprocating guide; into package form ona support mounted on a mandrel rotatable by frictional contact with acontinuously rotatingiiro'lljof pins fixed-to the end. of said mandrelfor receiving the yarn-at the beginning of the winding operation, anoscillating. yarn guide for guiding the yarn onto said pins, and meansoperatively connected to said continuously rotating roll for moving saidoscillating yarn guide soas :to cause the yarn. to be :ledto saidsupport and to said reciprocating'guide after a. predetermined number ofyarn windings have been placed on said pins; said latterm'eans includinga shaft ior supporting said. oscillating yarnguide,v a pinion fixed.tosaid shaft and. a'reciprocating rack for moving said pinion and saidshaft. I

5. The combination. with. 'a" yarn winding ap- .-para=tus wherein yarnwound, by means including a reciprocating :eui-de, into package form ona support mounted on: mandrelrptatable by frictional contact with acontinuously rotatin g roll, of pins fixed to the end of said mandrelfor receiving the yarn at the beginning of the winding operation, anoscillating yarn g for guiding the yarn onto said pins, and meansoperatively connected to said continuously rotating roll for moving saidoscillating yarn guide a pinion fixed to said shaft, a reciprocatingrack for angularly moving said pinion and said shaft,

and a. cam for causing said rack to reciprocate; 6. The combination witha yarn winding apparatus wherein yarn is wound, by means eluding areciprocating guide, into package form on a support mounted on a mandrelrotatable by frictional contact with a continuously rotating roll, ofpins fixed to the end of said mndrel for receiving the yarn at thebeginning of so as to cause the yarn to be led to said support and tosaid reciprocating guide after a Pr determined number of yarn windingshave been placed on said pins, said latter means including a shaft forsupporting said oscillating yarn guide, a pinion fixed to said shaft, areciprocating rack for angularly moving said pinion and said shaft, acam for causing said rack to reciprocate, and means, including a speedreducer. for rotating said cam at a predetermined speed.

8. The combination with a yarn winding apparatus wherein yarn is wound,by means inciuding a reciprocating guide, into package form on a supportmounted on a mandrel rotatable by frictional contact with a continuouslyrotatin roll, of pins fixed to the end of said mandrel for receiving theyarn at the beginning of the winding operation, an oscillating yarnguide for guiding the yarn onto said pins, and mean operativelyconnected to said "continuously rotating roll for moving saidoscillating yarn guide so as to cause the yarn tobe led to said supportthe winding operation, an oscillating yarn guide]- for guiding the yarnonto said pins, and means 1 operatively connected to said continuouslyrotating roll for moving said oscillatin yarn guide so as to cause theyarn to be led to said support and to said reciprocating guide after apredetermined number of yarn windings have been placed on said pins,said latter means includin a shaft for supporting said oscillating yarnguide, a pinion fixed to said shaft, a reciprocating rack for angularlymoving said pinion and said shaft, a cam for causing said rack toreciprocate," and means for rotating said cam at a predetermine speed. 17. The combination with a yarn windin apparatus wherein yarn is wound,by means. including a reciprocating guide, into packageform on a supportmounted on a mandrel rotatable by frictional contact with a continuouslyr01 tating roll, of pins fixed to the end of said mandrel for receivingthe yarn at the beginning of the winding operation, an oscillating yarnguide for guiding the yarn onto said pins, and means operativelyconnected to said continuously rotating roll for moving said oscillatingyarn guide and to said reciprocating guide after a predetermined numberof yarn windings have been placed on said pins, saidlatter meansincluding a shaft for supporting said oscillating yarn guide, a pinionfixed to said shaft, a reciprocating rack for angularly moving saidpinion and said shaft, a cam for causing said rack to reciprocate, andmeans, including a speed reducer operated from said continuouslyrotating roll,

for rotating said cam at a predetermined speed.

ALBERT W. KEIGHT.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS

